The Mentalist: When Patrick (Simon Baker) returns as a consultant he joins a new team with a new boss (Reed Diamond) since Lisbon (Robin Tunney) has been suspended and the rest of the team reassigned in this new episode (10 p.m. CBS).

The Firm: Mitch (Josh Lucas) asks Ray (Callum Keith Rennie) to dig up some information to help his defense of a gambler (Randal Edwards), who is willing to risk a guilty verdict to clear himself of a murder charge, in this new episode (10 p.m. NBC).

Fat Chef: In this new series, overweight food professionals spend four months with therapists, nutritionists and trainers to defeat their abusive relationships with food (10 p.m. Food).

Inside Comedy: David Steinberg hosts this new series. In the premiere he talks with Jerry Seinfeld and Don Rickles about their comedy careers (11 p.m. Showtime).

The Fireball of Christ: This new documentary purports to have evidence that the impact of a deadly meteorite may have played a part in the adoption of Christianity by the Roman Empire (8 and 11 p.m. National Geographic).